Salopina pumila was named by Baarli (1988). Its type specimen is PMO 111691, a valve (mould of brachial valve), and it is a 3D body fossil. Its type locality is Kampebråten, which is in a Telychian marine carbonate/shale in the Vik Formation of Norway.

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.